Toothbrush



FIG. 1 is a front view of a toothbrush showing our new design;

FIG. 2 is a side view thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a rear view thereof;

FIG. 4 is an end view as seen from the bottom of FIG. 2; and,

FIG. 5 is an end view as seen from the top of FIG. 2. 

The ornamental design for a toothbrush, as shown and described. 